3 years ago

Tìm x a) 4x^2-12x=-9

Mathematics

1 answer:

DaniilM [7]3 years ago

5 0

Just told you : first know by heart remarkable identities !

Then apply :

4x²-12x = -9

4x²-12x +9 =0

(2x-3)² = 0

(2x-3) (2x-3) = 0

Now you have a double solution :

2x-3 = 0

and 2x -3 = 0

I let you try !

You might be interested in

How do I use 290-3x=75 as a word problem?

Papessa [141]

Two hundred and ninety subtract three X equals 75

4 0

3 years ago

Read 2 more answers

124 -115 is close or far apart and ,what is the strategy to get the answer

serious [3.7K]

Its not far apart if it 15 or more yes it far

4 0

2 years ago

What is the slope of the line that passes through the points (4, 9) and (1, 6)?

Aleksandr [31]

a = ( 1 , 6 )

b = ( 4 , 9 )

$slope = \frac{y(b) - y(a)}{x(b) - x(a)} \\$

Now just need to put the coordinates in the above equation :

$slope = \frac{9 - 6}{4 - 1} \\$

$slope = \frac{3}{3} \\$

$slope = 1$

And we're done...♥️♥️♥️♥️♥️

5 0

2 years ago

Please help! posted picture of question

o-na [289]

C. 5x - 2y = 16 is your answer

plug in each point into the equation.

(2, -3)

x = 2, y = -3

5(2) - 2(-3) = 16
10 + 6 = 16
16 = 16 (True)

(4,2)

x = 4, y = 2

5(4) - 2(2) = 16
20 - 4 = 16
16 = 16 (True)

hope this helps

4 0

3 years ago

Read 2 more answers

a corn vendor at a farmers market was selling a bag of 8 ears of corn for $2.56 anithert vendor was selling a bad of 12 for 4.32

maria [59]

Answer:

8 for 2.56

Step-by-step explanation:

THE ANSWER IS IN CENTS.

2.56 ÷ 8 = 0.32 per ear

4.23 ÷ 12 = 0.36 per ear

3 0

2 years ago